ABS Plastic Throttle Body TPS Sensor Replacement 35102-38610

Electrical Specifications (Reference):

• Closed Throttle Voltage (2.4L 4-cylinder & 3.5L V6): 300 to 900 millivolts

• Closed Throttle Voltage (2.7L V6, 2001-2006): 250 to 800 millivolts

The sensor operates by detecting the throttle valve position and converting mechanical rotation into an electrical signal. The signal voltage varies proportionally with throttle opening, providing the ECU with continuous, real-time data for fuel injection and ignition timing adjustments.

The Throttle Position Sensor 35102-38610 is identified by the following Original Equipment (OE) reference numbers:

Related Reference Numbers (for comparison):

The Throttle Position Sensor 35102-38610 is designed for compatibility with a range of Hyundai and Kia vehicles.

Hyundai:

• Santa Fe (2000–2006)

  • Base / GL / High Grade / Middle Grade trims

  • 5-door wagon body style

• Sonata (2002–2005)

  • Base / GL / GLS trims

• Trajet

• Tiburon

Kia:

• Optima (2001–2006)

  • EX / LX trims

• Magentis

Manufacturing Years:

• 2000–2006

Important Compatibility Notes:

• This sensor is specifically designed for Hyundai and Kia vehicle applications

• Compatible with both manual and automatic transmission variants

• Always cross-check the OE reference number against the number found on your current unit to ensure proper fitment

• Verify compatibility with your specific vehicle year, make, model, and engine size before purchasing

A failing or malfunctioning Throttle Position Sensor can produce a range of drivability issues. Below are the most common symptoms to watch for:

The most common symptom of a faulty TPS is hesitation when pressing the accelerator. The vehicle may jerk or stumble because the malfunctioning sensor fails to send proper throttle position data, causing an imbalance in the air-fuel mixture needed for smooth acceleration.

A faulty TPS can cause the engine idle speed to fluctuate unpredictably. When the sensor sends inconsistent signals to the ECU, the engine control module mismanages idle speed, leading to rough idling or "hunting" RPMs.

Since the ECU relies on throttle position data to determine the correct air-fuel ratio, a defective sensor may cause the engine to run either too rich or too lean, significantly reducing fuel efficiency.

The engine may stall unexpectedly—particularly when stopping or at idle—as the ECU receives incorrect throttle position signals and fails to maintain proper air or fuel delivery.

The throttle may become unresponsive or delayed when the accelerator pedal is pressed. This occurs because the ECU is not receiving accurate position data to adjust fuel delivery and ignition timing accordingly.

The vehicle may experience surging or "bucking" while maintaining a steady speed, as the ECU receives fluctuating throttle position signals.

A malfunctioning TPS can cause harsh, delayed, or erratic shifting in automatic transmissions. The ECU uses TPS data as one of the inputs for shift timing; incorrect data can lead to aggressive or late shifts, putting unnecessary stress on the transmission.

As with many engine management issues, a failing TPS will typically trigger the Check Engine Light. Common diagnostic trouble codes (DTCs) associated with TPS failure include:

• P0120 – Throttle/Pedal Position Sensor/Switch "A" Circuit Malfunction

• P0121 – Throttle/Pedal Position Sensor/Switch "A" Circuit Range/Performance

• P0122 – Throttle/Pedal Position Sensor/Switch "A" Circuit Low Input

• P0123 – Throttle/Pedal Position Sensor/Switch "A" Circuit High Input

An OBD-II scanner can be used to read these codes and confirm whether the TPS is the source of the issue.

• Wear and tear – Internal potentiometer tracks wear over time due to repeated throttle movements

• Carbon buildup – Excessive carbon deposits on the throttle body can cause the sensor to stick or provide inaccurate readings

• Physical damage – Impact or mechanical stress can damage the sensor housing or internal components

• Moisture ingress – Liquid intrusion can cause corrosion and electrical shorts

When sourcing or purchasing the Throttle Position Sensor 35102-38610, consider the following factors to ensure optimal performance and compatibility:

Always confirm that the part number on your existing sensor matches 35102-38610. Related formats include 35102 38610 and 3510238610. Cross-check the OE reference number against the number found on your current unit before purchasing.

Ensure the sensor is compatible with your specific vehicle make, model, year, engine size, and transmission type. This sensor is designed for Hyundai and Kia vehicles including Santa Fe (2000–2006), Sonata (2002–2005), Optima (2001–2006), and others. Different vehicles may have varying specifications, and selecting the wrong sensor can lead to poor engine response or persistent check engine light issues.

Verify that the sensor features a 3-pin rectangular connector and operates with clockwise rotation. Confirm that the connector configuration matches your vehicle's wiring harness.

Confirm that the connector type and pin configuration match your vehicle's wiring harness. This sensor features a rectangular 3-pin connector without cable.

Look for sensors constructed with durable materials such as ABS plastic housing. High-quality sensors feature mechanical designs with needle bearings at both ends to reduce rotational friction and prevent sticking issues caused by carbon buildup on the throttle body.

Prioritize products that meet or exceed OEM standards and automotive quality management system certifications. Suppliers adhering to rigorous quality controls demonstrate commitment to product reliability and consistency.

When sourcing from suppliers, evaluate their technical capabilities, quality assurance processes, and production capacity. Look for evidence of:

• Strict quality control standards meeting OEM specifications

• Multiple inspections and testing before shipment

• Durability testing for vibration, moisture resistance, and lifecycle performance

• In-house R&D and calibration capabilities

The sensor features a compact design with two mounting bores for secure installation. During installation, ensure that:

• The sensor is properly aligned with the throttle shaft

• Mounting screws are tightened to the correct torque specification

• The connector is securely fastened

• Sensor wires are not routed over sharp edges

• Proper clearance is maintained from ignition HT leads, coil leads, and other sources of electrical interference

After installation, it is recommended to verify the closed throttle voltage reading using a scan tool. For 2.4L four-cylinder and 3.5L V6 engines, the value should be 300 to 900 millivolts with the throttle fully closed. For 2.7L V6 engines (2001–2006), the value should be 250 to 800 millivolts.

Consider products that come with warranty coverage and technical support. A minimum 12-month warranty is typically offered on genuine OEM parts. A warranty can provide assurance of product quality and reliability.

• The sensor is a potentiometer-type device that provides continuous variable resistance output proportional to throttle position

• The sensor features clockwise rotation direction

• The sensor converts throttle position into a voltage signal input to the ECU

• The high-reliability design utilizes needle bearings at both ends to reduce friction and prevent carbon-related sticking issues

• Proper calibration is essential for accurate throttle response; voltage verification using a scan tool is recommended after installation